pgsql: Make heap_page_is_all_visible independent of LVRelState

Make heap_page_is_all_visible independent of LVRelState

This function only requires a few fields from LVRelState, so pass them
in individually.

This change allows calling heap_page_is_all_visible() from code such as
pruneheap.c, which does not have access to an LVRelState.

Author: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Kirill Reshke <reshkekirill@gmail.com>
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/2wk7jo4m4qwh5sn33pfgerdjfujebbccsmmlownybddbh6nawl%40mdyyqpqzxjek

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/3e4705484e0c64c7e90d5cc697a9aaf474287d0d

Modified Files
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src/backend/access/heap/vacuumlazy.c | 60 +++++++++++++++++++++++-------------
1 file changed, 38 insertions(+), 22 deletions(-)